Weather Records on 30 October 1971

1,663 weather records were set or tied worldwide on 30 October 1971. Highest significance: Great Falls, CA.

Key Facts for 30 October 1971

On 30 October 1971, 1,663 weather records were set or tied at long-record stations worldwide.
285 were record highs and 845 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 306 monthly and 1,356 daily.
Great Falls set a monthly record daily snowfall of 22.9 cm (9.0 in) on 30 October 1971.
Across 153 earlier years (1799 to 2025) the same calendar date averaged 482 records.

Record Map

1,663 stations

1,663 station records on 30 October 1971 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 October 1971: highest significance records shown on the map
Station	Country	Type	Value	Significance
Great Falls	Canada	Record daily snowfall	22.9 cm (9.0 in)	66 of 100 (Major)
Collegeville St John's	United States	Record daily precipitation	49.5 mm (1.9 in)	63 of 100 (Major)
Sprague	Canada	Record daily precipitation	54.6 mm (2.1 in)	59 of 100 (Notable)
Bird Island	United States	Record daily precipitation	42.4 mm (1.7 in)	58 of 100 (Notable)
Dayville	United States	Record daily snowfall	15.2 cm (6.0 in)	57 of 100 (Notable)
Kanosh	United States	Record snow depth	38.1 cm (15.0 in)	55 of 100 (Notable)
Winnipeg Richardson Int'l A	Canada	Record daily snowfall	24.6 cm (9.7 in)	53 of 100 (Notable)
Salique (Bos)	South Africa	Record daily precipitation	74.5 mm (2.9 in)	53 of 100 (Notable)
Ashland #2	United States	Record daily precipitation	37.8 mm (1.5 in)	52 of 100 (Notable)
Richfield Radio Ksvc	United States	Record low minimum temperature	-17.8 C (0.0 F)	52 of 100 (Notable)
Tierra Blanca (Smn)	Mexico	Record daily precipitation	154.9 mm (6.1 in)	50 of 100 (Notable)
Zomerkomst (Bos)	South Africa	Record daily precipitation	52.0 mm (2.0 in)	50 of 100 (Notable)
Tropic	United States	Record low maximum temperature	-5.0 C (23.0 F)	50 of 100 (Notable)
Burdekin Shire Council	Australia	Record daily precipitation	27.7 mm (1.1 in)	49 of 100 (Notable)
Deloraine	Canada	Record daily snowfall	10.2 cm (4.0 in)	49 of 100 (Notable)
Ear Falls	Canada	Record daily precipitation	26.7 mm (1.1 in)	48 of 100 (Notable)
Loa	United States	Record low minimum temperature	-22.8 C (-9.0 F)	48 of 100 (Notable)
Oak City	United States	Record snow depth	30.5 cm (12.0 in)	48 of 100 (Notable)
Paragonah	United States	Record low minimum temperature	-18.9 C (-2.0 F)	48 of 100 (Notable)
Kenora A	Canada	Record daily precipitation	35.3 mm (1.4 in)	47 of 100 (Notable)
Alton	United States	Record low minimum temperature	-18.9 C (-2.0 F)	47 of 100 (Notable)
Hanksville	United States	Record low minimum temperature	-21.1 C (-6.0 F)	47 of 100 (Notable)
Conceicao da Barra	Brazil	Record daily precipitation	132.2 mm (5.2 in)	45 of 100 (Notable)
De Hoek (Bos)	South Africa	Record daily precipitation	135.0 mm (5.3 in)	45 of 100 (Notable)
Newport Beach Harbor	United States	Record low minimum temperature	0.0 C (32.0 F)	45 of 100 (Notable)
Harrison	United States	Record snow depth	22.9 cm (9.0 in)	45 of 100 (Notable)
Ft Washakie 1 SE	United States	Record snow depth	58.4 cm (23.0 in)	45 of 100 (Notable)
Morris	Canada	Record daily snowfall	16.5 cm (6.5 in)	44 of 100 (Notable)
Broadlands	South Africa	Record daily precipitation	35.0 mm (1.4 in)	44 of 100 (Notable)
Middlekop (Bos)	South Africa	Record daily precipitation	85.5 mm (3.4 in)	44 of 100 (Notable)
Fillmore	United States	Record low minimum temperature	-17.2 C (1.0 F)	44 of 100 (Notable)
Bjelasnica	Bosnia and Herzegovina	Record low minimum temperature	-12.0 C (10.4 F)	43 of 100 (Notable)
Black Rock	United States	Record low minimum temperature	-21.1 C (-6.0 F)	43 of 100 (Notable)
St Cloud Rgnl AP	United States	Record daily precipitation	41.9 mm (1.6 in)	43 of 100 (Notable)
Morden Cda	Canada	Record daily snowfall	21.8 cm (8.6 in)	42 of 100 (Notable)
New Salem 5NW	United States	Record daily snowfall	5.1 cm (2.0 in)	42 of 100 (Notable)
Park River	United States	Record daily snowfall	10.2 cm (4.0 in)	42 of 100 (Notable)
Moro	United States	Record daily snowfall	10.2 cm (4.0 in)	42 of 100 (Notable)
Redwood Falls Muni AP	United States	Record daily precipitation	36.6 mm (1.4 in)	42 of 100 (Notable)
Kalkfontein	South Africa	Record daily precipitation	33.5 mm (1.3 in)	41 of 100 (Notable)
Winkelman 6 S	United States	Record low minimum temperature	-5.6 C (21.9 F)	41 of 100 (Notable)
Elsinore	United States	Record low minimum temperature	-3.9 C (25.0 F)	41 of 100 (Notable)
Clarinda	United States	Record daily precipitation	43.2 mm (1.7 in)	41 of 100 (Notable)
Oak City	United States	Record low minimum temperature	-14.4 C (6.1 F)	41 of 100 (Notable)
Bjelasnica	Bosnia and Herzegovina	Record low maximum temperature	-6.8 C (19.8 F)	40 of 100 (Notable)
Keams Canyon	United States	Record low minimum temperature	-12.2 C (10.0 F)	40 of 100 (Notable)
Tombstone	United States	Record low minimum temperature	-2.8 C (27.0 F)	40 of 100 (Notable)
Ft Duchesne	United States	Record low minimum temperature	-18.3 C (-0.9 F)	40 of 100 (Notable)
Manti	United States	Record low minimum temperature	-13.3 C (8.1 F)	40 of 100 (Notable)
Hatteras	United States	Record high maximum temperature	28.3 C (82.9 F)	40 of 100 (Notable)
Watertown Rgnl AP	United States	Record daily precipitation	28.2 mm (1.1 in)	40 of 100 (Notable)
Darwin Loco Works	Australia	Record daily precipitation	40.1 mm (1.6 in)	39 of 100 (Notable)
Newman	United States	Record low minimum temperature	-2.8 C (27.0 F)	39 of 100 (Notable)
Rush 1N	United States	Record daily snowfall	10.2 cm (4.0 in)	39 of 100 (Notable)
Gull Lake Dam	United States	Record daily precipitation	39.1 mm (1.5 in)	39 of 100 (Notable)
Jefferson 3SE	United States	Record daily precipitation	63.5 mm (2.5 in)	39 of 100 (Notable)
Escalante	United States	Record low maximum temperature	0.6 C (33.1 F)	39 of 100 (Notable)
Panguitch	United States	Record low minimum temperature	-23.3 C (-9.9 F)	39 of 100 (Notable)
St George	United States	Record low maximum temperature	7.8 C (46.0 F)	39 of 100 (Notable)
Tropic	United States	Record low minimum temperature	-12.8 C (9.0 F)	39 of 100 (Notable)

Counts by Type and Timescale

1,663 records

Records set or tied on 30 October 1971 by type: Highest daily maximum 154, Lowest daily maximum 448, Highest daily minimum 131, Lowest daily minimum 397, Heaviest daily rainfall 347, Heaviest daily snowfall 130, Deepest snow cover 56.

Records on 30 October 1971 by type
Record type	Records
Highest daily maximum	154
Lowest daily maximum	448
Highest daily minimum	131
Lowest daily minimum	397
Heaviest daily rainfall	347
Heaviest daily snowfall	130
Deepest snow cover	56

Records on 30 October 1971 by timescale: all-time 1, monthly 306, daily 1,356.

How Much Records Were Beaten By

1,368 broken records

Margins by which the 1,368 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 381.0. Ties are not counted.

Top 20 by Significance

30 October 1971

Top 20 records on 30 October 1971 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 October 1971	Great Falls, CA	monthly snowfall	22.9 cm (9.0 in)	10.2 cm (4.0 in)	45 years	66 of 100 (Major)
30 October 1971	Collegeville St John's, US	daily rain	49.5 mm (1.9 in)	28.7 mm (1.1 in)	74 years	63 of 100 (Major)
30 October 1971	Sprague, CA	daily rain	54.6 mm (2.1 in)	42.4 mm (1.7 in)	46 years	59 of 100 (Notable)
30 October 1971	Bird Island, US	daily rain	42.4 mm (1.7 in)	24.4 mm (1.0 in)	74 years	58 of 100 (Notable)
30 October 1971	Dayville, US	monthly snowfall	15.2 cm (6.0 in)	12.7 cm (5.0 in)	52 years	57 of 100 (Notable)
30 October 1971	Kanosh, US	daily snow depth	38.1 cm (15.0 in)	38.1 cm (15.0 in)	42 years	55 of 100 (Notable)
30 October 1971	Winnipeg Richardson Int'l A, CA	monthly snowfall	24.6 cm (9.7 in)	11.4 cm (4.5 in)	22 years	53 of 100 (Notable)
30 October 1971	Salique (Bos), ZA	daily rain	74.5 mm (2.9 in)	62.6 mm (2.5 in)	34 years	53 of 100 (Notable)
30 October 1971	Ashland #2, US	daily rain	37.8 mm (1.5 in)	23.6 mm (0.9 in)	70 years	52 of 100 (Notable)
30 October 1971	Richfield Radio Ksvc, US	monthly low min	-17.8 C (0.0 F)	5.6 C (10.1 F)	73 years	52 of 100 (Notable)
30 October 1971	Tierra Blanca (Smn), MX	daily rain	154.9 mm (6.1 in)	111.0 mm (4.4 in)	16 years	50 of 100 (Notable)
30 October 1971	Zomerkomst (Bos), ZA	daily rain	52.0 mm (2.0 in)	35.2 mm (1.4 in)	44 years	50 of 100 (Notable)
30 October 1971	Tropic, US	monthly low max	-5.0 C (23.0 F)	6.1 C (11.0 F)	72 years	50 of 100 (Notable)
30 October 1971	Burdekin Shire Council, AU	daily rain	27.7 mm (1.1 in)	26.2 mm (1.0 in)	76 years	49 of 100 (Notable)
30 October 1971	Deloraine, CA	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	73 years	49 of 100 (Notable)
30 October 1971	Ear Falls, CA	daily rain	26.7 mm (1.1 in)	19.1 mm (0.8 in)	36 years	48 of 100 (Notable)
30 October 1971	Loa, US	monthly low min	-22.8 C (-9.0 F)	4.5 C (8.1 F)	71 years	48 of 100 (Notable)
30 October 1971	Oak City, US	daily snow depth	30.5 cm (12.0 in)	30.5 cm (12.0 in)	42 years	48 of 100 (Notable)
30 October 1971	Paragonah, US	monthly low min	-18.9 C (-2.0 F)	6.7 C (12.1 F)	46 years	48 of 100 (Notable)
30 October 1971	Kenora A, CA	daily rain	35.3 mm (1.4 in)	26.9 mm (1.1 in)	14 years	47 of 100 (Notable)

Significance is a score from 0 to 100 combining margin, the age of the old record and the length of the station's record. How it is computed.

The Same Date in Other Years

1799 to 1971

Records set or tied on this calendar date in each year from 1799 to 1971. 1971 had 1,663 records.

Counts for years before the ledger starts come from the same station rules.

Records on 10-30 in each year
Year	Records
1799	1
1815	1
1837	1
1839	1
1841	1
1849	1
1856	1
1866	1
1867	1
1869	5
1870	1
1871	1
1873	2
1877	1
1881	4
1885	3
1886	2
1887	1
1888	1
1889	3
1890	4
1891	2
1892	3
1894	7
1896	4
1897	2
1898	2
1899	2
1900	3
1901	9
1902	6
1903	3
1904	1
1905	12
1906	25
1907	12
1908	14
1909	15
1910	22
1911	19
1912	28
1913	38
1914	22
1915	39
1916	23
1917	85
1918	189
1919	80
1920	73
1921	31
1922	108
1923	202
1924	246
1925	755
1926	131
1927	259
1928	195
1929	277
1930	228
1931	144
1932	181
1933	454
1934	198
1935	739
1936	253
1937	496
1938	245
1939	240
1940	251
1941	393
1942	877
1943	255
1944	497
1945	446
1946	826
1947	252
1948	326
1949	528
1950	1,186
1951	373
1952	635
1953	522
1954	276
1955	494
1956	716
1957	531
1958	366
1959	859
1960	258
1961	781
1962	382
1963	353
1964	488
1965	439
1966	490
1967	665
1968	555
1969	656
1970	636
1971	1,663
1972	902
1973	534
1974	1,039
1975	427
1976	760
1977	882
1978	359
1979	809
1980	885
1981	547
1982	534
1983	549
1984	1,270
1985	848
1986	422
1987	883
1988	972
1989	904
1990	685
1991	2,772
1992	1,228
1993	2,095
1994	777
1995	831
1996	1,299
1997	1,033
1998	771
1999	897
2000	1,659
2001	1,233
2002	1,564
2003	973
2004	1,188
2005	1,144
2006	886
2007	773
2008	1,310
2009	1,513
2010	619
2011	1,022
2012	1,413
2013	622
2014	297
2015	395
2016	981
2017	783
2018	507
2019	1,931
2020	683
2021	486
2022	762
2023	969
2024	1,393
2025	322

Download the Data

Data for records on 1971-10-30: CSV or JSON. Field meanings are on the data page.

Sources: Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Made with Natural Earth. Public domain map data. Borders are Natural Earth's de facto depiction. Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 50	1,305
50 to 100	44
100 to 150	13
150 to 200	3
200 to 250	1
250 to 300	0
300 to 350	1
350 to 400	1